In Java I'm writing a data file that is essentially a save file. I know if I write the file as a .dat (UTF-8) when I open the file in a text editor the numbers are unreadable. In the same file text is completely readable. Is there a file format I can use that makes text unreadable in a text editor?
For the moment I am aware of .txt and UTF-8 as writable (and readable) file formats.
Additional information.
I have a class in Java that reads in a .csv file that I generate in a separate program. I use the class to write a file that I subsequently use as a read file in my Java project. In my class I can write a .txt file that literally just translates the .csv file into a .txt file. If I use UTF-8 encoding then all the numbers essentially aren't identifiable if I open the file in a text editor. What I'm looking for is there an encoding I can use (in the Java libraries) that when I write them to my own file becomes essentially unreadable in a text editor.
I'm not looking to change a file extension, and I'm not wanting to make it uneditable as the UTF-8 stops it being edited as far as I could tell. I was just wondering whether there was an encoding type I could use that makes the file unreadable. A lot of the data I have in the csv I don't want readily available to anyone that has a text editor. If the answer is encryption then so be it, I was just hoping that there was a quick easy of change my encoder.
Thanks.